The BIOS -- Basic Input/Output System -- is a set of instructions installed on a solid-state memory chip that tells your computer the basics of how to behave at start-up, before any software has been loaded from the hard drive. If your motherboard has an American Megatrends P1.40 BIOS installed, you can access it by pressing a key during your computer's start-up sequence, and modify its contents using the simple interface that appears.
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Reboot your computer and wait for the "Press <DEL> to enter BIOS" prompt to appear. Press the "DEL" key quickly. If the prompt instead calls for the F1 or F2 key, use that instead.
Use AMI's two-screen interface to make whatever changes you want to the BIOS. Press "TAB" to switch between items in the BIOS, and the left and right arrow keys to change an item. Press "ALT" and "P" to switch between the two pages of options. When you select an option with the TAB key, an explanation will appear in the right pane.
Press "ALT" and "B" to reboot the computer using your new settings.
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